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4 years ago

Find the distance between the two points rounding to the nearest tenth (if necessary).

Mathematics

1 answer:

irina1246 [14]4 years ago

8 0

Answer:

The answer is 15.

Step-by-step explanation:

d = sqr. root of (x_2 - x_1)^2 + (y_2-y_1)^2}

= sqr. root of 7- - 2 ^ 2 + 3 - - 9 ^ 2

= sqr. root of 9 ^ 2 + 12 ^ 2

= sqr. root of 81 + 144

= sqr. root of 225

= 15

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In order to estimate the typical amount of TV watched per day by students at her school of 932 students, a student has all of th

Irina18 [472]

Answer:

1) Quantitative

2) a) Mean or Median

3) b) Bar graph

Step-by-step explanation:

The question is incomplete:

"In order to estimate the typical amount of TV watched per day by students at her school of 932 students, a student has all of the students in her statistics class (30 students) take a short survey, finding that, on average, students in her statistics class report watching 1.2 hours of television per day.

1 - Is the varlable categorical or quantitative?

2 - Identlfy two statistics that the student could use to summarize the variable.

a) Mean or Median b) Mean or Proportions c) Mean or Mode d) Median or Mode.

3 - Identify one graph that the student could use to summarize the variable.

a) Line graph b) Bar graph c) Dotplot d) Pie chart e) Scatter Plot

1) The variable is quantitative as it is a number and we can perform meaningful numerical operations with it.

2) The mean is the most appropiate statistic to summarize the variable.

Proportions is not adequate.

Mode is not appropiate as we are probably dealing with a continous variable.

The second most appropiate is the median, as it is appropiate for continous values for the variable.

3) If he classifies the result in classes, he can chart the results in a bar graph.

6 0

3 years ago

ssume that in the year 2000 there are four different forms of psychotherapy available for curing phobias. an experimenter arrang

Liono4ka [1.6K]

We will compare pairwise treatment with the help of t-statistic to find the best treatment.The t-statistic, which is used in statistics, measures how far a parameter's estimated value deviates from its hypothesized value relative to its standard error.We need to check if the treatments are effective in curing phobia.

First, we must determine whether there is a relationship between the type of treatment used and the final result (cure or not cure). We may examine this using the Chi-square test of association.In the second phase, we must determine if all therapies are the same or different if the alternative hypothesis—that is, whether there exists any kind of link between therapy and cure—is accepted.

We must perform a One-way ANOVA for the treatments in this case, assuming that all treatments are equal. If the null hypothesis is rejected in this instance, then the treatments differ. then, we go to step three.We will compare pairwise treatment with the help of t-statistic to find the best treatment.

To learn more about t-statistic visit:brainly.com/question/15236063

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5 0

2 years ago

A recipe for fruit punch calls for 8 cups of Sprite for every 12 cups of fruit juice. What percent of the recipe is made up of f

Tasya [4]

Answer:

y=8x+12

Step-by-step explanation:

8 0

4 years ago

Which of the following is an arithmetic sequence?a.12,2,72,5,...b.−711,611,−511,411,...c.−34,−35,−36,−37,...d.34,−32,3,−6,...

san4es73 [151]

Answer:

A. 12,2,72,5........ is the answer

4 0

3 years ago

Pls help me with this, please thank you!!

Aleonysh [2.5K]

Mr.chen drove 23 miles south from where he started. 3.25×50=162.5 is what you have to do first because it said that he drove north for 3.25 hours and each hour he drives for 50 miles. Then you have to subtract 162.5 from 185.5 so that you get how far he drove from where he started. 185.5 - 162.5= 23. So he drove 23 miles south from where he started. I hope this helps.

4 0

3 years ago